Abstract: According to the present disclosure, provided is a network system including a plurality of devices and a network management apparatus connected to the plurality of devices by an IP transmission line, and the network management apparatus (100) includes a setting execution unit (116) configured to execute setting of a path to which the plurality of devices are connected, and setting of parameters for controlling the plurality of devices. With this configuration, it is possible to freely set a connection path and devices in a system in which a plurality of devices are connected.

Abstract: The technique in PTL 1 is incapable of grasping a decrease in the amount of a refrigerant from an initial amount of the refrigerant, and the determination of the amount of the refrigerant is insufficient for the purpose other than protection of a compressor. A refrigeration cycle apparatus includes an air temperature sensor, and a condensation temperature sensor. The air temperature sensor detects an air temperature, which is a temperature of air that flows into a condenser. The condensation temperature sensor detects a condensation temperature of the refrigerant that flows through the condenser. The apparatus is configured to acquire a temperature difference between the air temperature and the condensation temperature. The apparatus is further configured to determine an amount of the refrigerant included in the refrigerant circuit by comparing a first temperature difference and a second temperature difference with each other. The first temperature difference is a temperature difference at a first timing.

Abstract: An assembled mandrel for forming a hollow structure having a shape similar to that of the assembled mandrel, by layering a prepreg on the surface of the longitudinally oriented assembled mandrel, covering the same with a vacuum bag, heating while creating a vacuum inside the vacuum bag, and heat-curing the prepreg while pressing the same into the assembled mandrel, the assembled mandrel being characterized by being equipped with: two outer mandrel members (first mandrel members) extending in the longitudinal direction; a center mandrel member (second mandrel member) sandwiched between the two outer mandrel members, and capable of being withdrawn in the lengthwise direction from between the two outer mandrel members after the hollow structure has been formed; and a tape (detachable member) formed from a low-friction material and adhered to one or more of the contact surfaces between the two outer mandrel members and the center mandrel member.

Abstract: An assembled mandrel for forming a hollow structure having a shape similar to that of the assembled mandrel, by layering a prepreg on the surface of the longitudinally oriented assembled mandrel, covering the same with a vacuum bag, heating while creating a vacuum inside the vacuum bag, and heat-curing the prepreg while pressing the same into the assembled mandrel, the assembled mandrel being characterized by being equipped with: two outer mandrel members (first mandrel members) extending in the longitudinal direction; a center mandrel member (second mandrel member) sandwiched between the two outer mandrel members, and capable of being withdrawn in the lengthwise direction from between the two outer mandrel members after the hollow structure has been formed; and a tape (detachable member) formed from a low-friction material and adhered to one or more of the contact surfaces between the two outer mandrel members and the center mandrel member.

Abstract: A 1-cyclohexyl-1-methylethylperoxy carbonate represented by the formula: ##STR1## (wherein n.sub.1 stands for 1 or 2 and, when n.sub.1 is 1, R.sub.1 stands for an alkyl group of up to 14 carbon atoms, an aralkyl group of up to 14 carbon atoms, an alkoxyalkyl group of up to 14 carbon atoms, a cycloalkyl group of up to 14 carbon atoms, or an aryl group of up to 14 carbon atoms, and when n.sub.1 is 2, R.sub.1 stands for an alkylene group of up to 16 carbon atoms, an aralkylene group of up to 16 carbon atoms, an oxaalkylene group of up to 16 carbon atoms, a cycloalkylene group of up to 16 carbon atoms, or a phenylene group of up to 16 carbon atoms) is a novel compound. It is produced by causing a chloroformate represented by the formula: ##STR2## (wherein n.sub.2 has the same meaning as n.sub.1 in the preceding formula) to react with 1-cyclohexyl-1-methylethylhydroperoxide.

Abstract: A 1-cyclohexyl-1-methylethyl peroxy ester, a novel compound, represented by the formula: ##STR1## wherein R.sup.1 stands for one member selected from the group consisting of H and alkyl groups and R.sup.2 and R.sup.3 independently stand for an alkyl group, provided that R.sup.2 and R.sup.3 each stand for an alkyl group of 1 to 5 carbon atoms and the sum of the carbon atoms of R.sup.2 and R.sup.3 is in the range of from 2 to 6 where R.sup.1 is H and R.sup.1, R.sup.2, and R.sup.3 each stand for an alkyl group of 1 to 9 carbon atoms and the sum of the carbon atoms of R.sup.1, R.sup.2, and R.sup.3 is in the range of from 3 to 11 where R.sup.1 is an alkyl group, a polymerization initiator for a vinyl group-containing compound monomer and a curing agent for an unsaturated polyester resin, which polymerization initiator and curing agent both contain as an active component thereof the ester mentioned above.

Abstract: A foamed metal which has an apparent specific gravity of from 0.2 to 0.8 and comprises an aggregate of polygonal closed cells of from 2 to 10 mm in average diameter. The foamed metal is not only light in weight, free of directionality and structurally strong but also excellent in sound-absorbing and electromagnetic shielding properties, and is useful as constructional, structural or functional material. A method for producing the foamed material comprises adding calcium as a thickening agent to molten aluminum or alloy thereof in an amount of from 0.2 to 8% by weight, followed by agitating to adjust the viscosity of the melet, then adding from 1 to 3% by weight of powdered titanium hydride as a foaming agent to the melt, and agitating the melt to effect foaming.